EP2987731B1 - Remplisseuse de moule pour un récipient en plastique - Google Patents

Remplisseuse de moule pour un récipient en plastique Download PDF

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Publication number
EP2987731B1
EP2987731B1 EP14181652.0A EP14181652A EP2987731B1 EP 2987731 B1 EP2987731 B1 EP 2987731B1 EP 14181652 A EP14181652 A EP 14181652A EP 2987731 B1 EP2987731 B1 EP 2987731B1
Authority
EP
European Patent Office
Prior art keywords
product
mold
filling machine
measuring device
plastic container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14181652.0A
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German (de)
English (en)
Other versions
EP2987731A1 (fr
Inventor
Patrick Engelhard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Krones AG
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Krones AG
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Filing date
Publication date
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Priority to EP14181652.0A priority Critical patent/EP2987731B1/fr
Publication of EP2987731A1 publication Critical patent/EP2987731A1/fr
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Publication of EP2987731B1 publication Critical patent/EP2987731B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/02—Machines characterised by the incorporation of means for making the containers or receptacles
    • B65B3/022—Making containers by moulding of a thermoplastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/08—Biaxial stretching during blow-moulding
    • B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
    • B29C49/12—Stretching rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/58—Blowing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/78—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B57/00—Automatic control, checking, warning, or safety devices
    • B65B57/10—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged
    • B65B57/14—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged and operating to control, or stop, the feed of articles or material to be packaged
    • B65B57/145—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged and operating to control, or stop, the feed of articles or material to be packaged for fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • B29C2049/4602—Blowing fluids
    • B29C2049/465—Blowing fluids being incompressible
    • B29C2049/4664—Blowing fluids being incompressible staying in the final article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C2049/4879—Moulds characterised by mould configurations
    • B29C2049/4892—Mould halves consisting of an independent main and bottom part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/08—Biaxial stretching during blow-moulding
    • B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
    • B29C49/12—Stretching rods
    • B29C49/121—Stretching rod configuration, e.g. geometry; Stretching rod material
    • B29C49/1212—Stretching rod configuration, e.g. geometry; Stretching rod material the stretching rod comprising at least one opening on the surface, e.g. through which compressed air is blown into the preform to expand the same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7158—Bottles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C3/26—Filling-heads; Means for engaging filling-heads with bottle necks
    • B67C3/2614—Filling-heads; Means for engaging filling-heads with bottle necks specially adapted for counter-pressure filling
    • B67C3/2617—Filling-heads; Means for engaging filling-heads with bottle necks specially adapted for counter-pressure filling the liquid valve being opened by mechanical or electrical actuation
    • B67C3/2622—Filling-heads; Means for engaging filling-heads with bottle necks specially adapted for counter-pressure filling the liquid valve being opened by mechanical or electrical actuation and the filling operation stopping when probes, e.g. electrical or optical probes, sense the wanted liquid level

Definitions

  • the invention relates to a mold filling machine with the features of the preamble of claim 1.
  • plastic containers can be produced by stretch blow molding from preforms.
  • the EP 1529620 B1 a method for the hydraulic forming of preforms into plastic bottles.
  • the preforms are first heated, placed in a mold and stretched there in the longitudinal direction.
  • Mineral water or the like is further introduced under pressure to produce the final container shape.
  • the mineral water remains in the container, so that a subsequent separate filling step is dispensable.
  • the US 2011/0031659 A1 further describes a method in which a heated preform is stretched by means of a stretching rod and then hydraulically expanded by means of an incompressible fluid, in particular water, to form a container. Thereafter, the fluid is displaced by compressed air and drains from the container.
  • an incompressible fluid in particular water
  • the disadvantage here is that occasionally different amounts of product are filled into the container. This is where the invention starts.
  • the WO 2013/020885 A1 discloses a system for simultaneously inflating and filling a plastic container.
  • the US 2013/0106028 A1 discloses an apparatus and method in which a preform with a pressurized fluid is transformed into a plastic container.
  • the GB 1,201,069 discloses a filling method and apparatus in which a preform with a sterile product is formed into a container.
  • the US 2014/0157726 A1 discloses a method and apparatus for making containers that are filled with a liquid substance.
  • the EP 0 458 093 A2 discloses a filling element for filling machines with a liquid valve.
  • the object of the present invention is to provide a mold filling machine with which a product quantity which is as constant as possible can be filled into the containers.
  • the invention provides a mold filling machine with the features of claim 1 ready.
  • the filled product quantity can be determined exactly and about the filling member can be controlled so that the desired target amount is filled into the container. Consequently, always the same amount of product is filled.
  • the mold filling machine can be arranged in a beverage processing plant.
  • the apparatus may be arranged downstream of a preform storage container, a rinser, a transport device, an injection molding machine for producing the preforms and / or a furnace for heating the preforms.
  • the device may be arranged upstream of a transport device, a capper and / or a packaging machine.
  • the plastic container may be intended to contain drinks, toiletries, pastes, chemical, biological and / or pharmaceutical products.
  • the plastic container may be a plastic bottle, a can and / or a tube.
  • the plastic container may in particular be a PET, HD-PE or PP container or bottle.
  • the preform may be intended to be expanded by deformation in the mold in the plastic container.
  • liquids including those containing dissolved carbon dioxide or the like, are by definition incompressible fluids in terms of their function in forming and filling the containers, as opposed to gases that are functionally defined as compressible fluids.
  • the mold filling machine may comprise a transport device for transporting plastic containers.
  • the transport device may be a conveyor belt or carousel.
  • the carousel may be rotatable about a vertical axis by means of a drive. "Vertical" can mean here that this is the direction that is directed to the center of the earth.
  • the transport device may comprise container receptacles for receiving the plastic containers on the neck, on the container body and / or container bottom.
  • a transport star may be upstream and / or downstream of the mold filling machine.
  • the mold filling machine may comprise at least one treatment station for expanding the preform to the plastic container in the mold cavity and for filling the product into the plastic container in the mold.
  • the mold filling machine may comprise a plurality of treatment stations, which correspond in particular with the container receptacles of the transport device. As a result, a plurality of plastic containers can be produced and filled in parallel with the mold filling machine.
  • Each treatment station may include a mold and a valve head.
  • the treatment stations may be connected to a rotary distributor for distribution of the molding fluid, the product, a gas, an underpressure and / or overpressure.
  • the treatment stations can be designed such that the preforms are introduced into the mold, stretched with the stretching rod, shaped with a molding fluid to the plastic container, the mold fluid is sucked off again and the product is filled.
  • the molding fluid may be water or a suitable incompressible fluid for container reshaping.
  • the treatment stations are designed such that the preform is introduced into the mold, stretched with the stretching rod and formed by means of the product to the plastic container.
  • the valve head may be designed to correspond with the mouth of the preform or of the plastic container during molding and / or during filling of the product.
  • a moving unit may be provided to close the mold with the valve head after introduction of the preform.
  • the valve head may include valves, conduits, nozzles, switches, and the like to insert or export the molding fluid, a gas, and / or the product into the preform and / or the plastic container.
  • the valve head may be designed to suck off the molding fluid and / or the gas.
  • the valve head can be provided to introduce an underpressure and / or overpressure into the preform or the plastic container.
  • the valve head may include or be connected to a compressor to apply pressure to the mold fluid and / or the gas.
  • the compressor may for example comprise a cylinder with a piston or a pump.
  • the valve head may be connected to a vacuum pump.
  • the valves may be arranged to regulate, release, and / or lock the flow of the molding fluid, the product, and / or the gas.
  • the stretch rod may be intended to stretch the preform in a heated state in the mold.
  • the filling member may be at least partially integrated in the stretching rod.
  • the stretch rod may be movable with a longitudinal adjustment or via a cam control along the longitudinal axis of the preform.
  • Measuring device can mean here that the actually filled product quantity is measured by a measuring instrument.
  • the measuring device can be designed such that it emits a signal that corresponds to the currently filled product quantity. Additionally or alternatively, the measuring device may be configured to emit a signal at a desired level.
  • the signal may be an electrical signal, such as a digital signal on a data bus or an analog voltage value proportional to the amount of product dispensed.
  • the measuring device may be connected to a machine control, which detects the signal from the measuring device and controls the filling member.
  • the machine controller may include a control circuit configured to control the filling member based on the signal from the measuring device.
  • the measuring device may be integrated in the mold, a product feed line, the valve head, the stretching rod and / or the filling member.
  • the filled product quantity may be a volume, a mass and / or a weight of the product filled in the container.
  • the volume and the mass can be converted into each other by means known per se via the density of the product. Likewise, mass and weight can be interconverted by gravitational acceleration of typically 9.81 N / kg.
  • the measuring device may comprise a position detection device for determining the stretching rod longitudinal position relative to the plastic container.
  • the position detection device may be an optical or magnetic encoder, with which the stretching rod longitudinal position can be continuously detected within a movement range.
  • the position detection device can be designed to detect a single or a plurality of discrete longitudinal positions of the stretch rod.
  • the position detecting device may be a reed contact or a Hall element for detecting a magnet on the stretch rod.
  • the stretch rod may be formed with a return gas pipe. This makes it particularly easy to detect the liquid level with the stretch rod.
  • the return gas pipe is usually used to escape the displaced during filling of the container gas volume. If the liquid level now hits the return gas pipe, gas can no longer escape and the filling process stops. This makes it possible to determine the liquid level of the filled container via the measurement and adjustment of the stretching rod longitudinal position.
  • the measuring device may comprise a trained on the stretch rod probe for detecting the level height in the plastic container.
  • the probe may for example be a conductivity sensor. Since the gas above the liquid level in the container usually has a lower conductivity than the product, it can be detected during filling, at which time the liquid level passes over the probe.
  • the measuring device comprises a weighing cell.
  • the load cell may include a load cell and optionally spring elements.
  • the weighing cell may be designed to determine the weight of the hollow mold and / or of the plastic container and the product filled therein. Because the weight of the hollow mold and the plastic container is usually known a priori, this can be subtracted from the measured weight. Consequently, the mold with the plastic container serves as a weighing chamber for the filled product. As a result, the device does not require a separate pre-chamber for weighing the product and can therefore be made simpler.
  • the load cell can be integrated in the mold. It is also conceivable that a support element of the load cell acts on the container for weighing, wherein in particular the hollow mold releases the container.
  • the load cell can be designed as strain gauges or as a piezoelectric force transducer. As a result, the load cell is particularly cost-effective.
  • the measuring device may comprise a product flow meter in the valve head or in a product inlet to the valve head.
  • the filled product quantity can be determined before it leaves the filling element and is thus independent of sloshing or fluid movement in the container.
  • the product flow meter may include a product channel and an impeller rotatably disposed therein. With a donor, caused by the product flow rotational movement of the impeller can be detected and closed on the bottled product quantity.
  • the measuring device may comprise a device for detecting a pre-dosage amount in a metering chamber.
  • the metering chamber may comprise a metering cylinder with a metering piston (similar to a syringe) arranged movably therein. It is also conceivable that the weight of a metering chamber with the amount of predosedosa contained therein is detected via a weighing cell. Alternatively, it is conceivable that the predosedage amount is detected with a product flow meter.
  • the detection device may comprise a load cell, a product flow meter and / or an encoder for detecting the position of the metering piston.
  • the metering chamber may be formed on the valve head. As a result, there is a small amount of product not detected by the measuring device in a line between the metering chamber and the filling member. As a result, the measuring device works even more accurately.
  • FIG. 1 an embodiment of a mold filling machine 1 with an upstream oven 7 is shown in a plan view.
  • the preforms 3 which first pass through the oven 7 and are thereby heated to the extent that they can be formed into the desired container shape with the following mold filling machine 1. Subsequently, the heated preforms are transferred with the inlet star 8 to the treatment stations 5, which will be described in more detail below with reference to the FIG. 2 to be discribed.
  • the preforms 3 are stretched in the treatment stations 5, formed into the desired container shape and filled with the product. In this case, the preforms 3 and the molded container 2 always remain in the molds 6.
  • the containers 2 are fed via the outlet star 9 further treatment steps.
  • the form-filling machine 1 can be followed or assigned by a capper with which the plastic containers 2 are closed.
  • the plastic containers 2 are here PET containers, but may be made of any other suitable plastic.
  • FIG. 2 is a treatment station 5 in the FIG. 1 shown mold filling machine 1 shown in a side sectional view. It can be seen that the preform 3 is already introduced into the mold 6. In the area of the mouth, the preform 3 has a collar and a thread not shown here, which later serves to screw a closure. The individual molded parts 6a-6c of the hollow mold 6 are movable over the multi-part mold carrier 10 in the directions Ra-Rc to release the finished molded container after filling. It is also conceivable that the preform 3 is inserted either from above into the opening of the hollow mold 6 or by opening and closing the mold parts 6a-6c in the mold 6.
  • valve head 11 with the stretching rod 13, which can be moved in the direction 11a by means of a positioning unit or cam control, not shown here, in order to lower it onto the hollow mold 6 and thus complete it with respect to the environment during forming and filling. It is conceivable that the valve head 11 has sealing elements for the preform 3 and / or the hollow mold 6.
  • the stretch rod 13 can be moved along a directional movement 13a, likewise not shown here, or by a cam control, so that the heated preform 3 can be stretched in the usual way.
  • the fluid nozzle 12 is formed on the valve head 11, by means of which a molding fluid can be pressed into the stretched preform 3.
  • the molding fluid here is water or a suitable liquid for forming and is provided via the supply line 14 and the compressor 20 with a suitable pressure. This is designed for example as a pressure cylinder.
  • the stretched preform 3 is pressed particularly rapidly against the shaping inner surfaces of the hollow mold 6 by the molding fluid and thus formed into the finished plastic container.
  • the molding fluid absorbs the heat of the preform 3 at the same time, so that the container obtains its dimensional stability as quickly as possible after forming.
  • the molding fluid is sucked through the openings 13b and a channel in the stretching rod 13 into the hydraulic suction line 16.
  • the filling member 21 is formed as an annular nozzle around the stretch rod 13.
  • the filling member 21 is held on the pneumatic suction lines 17, 18 on the valve head 11 and on the mold 6 in a pressure equilibrium between the inside and outside, so that the plastic container does not collapse. A filling under negative pressure in the plastic container is advantageous.
  • the treatment station 5 is formed such that the product is used as a molding fluid for molding the plastic container. As a result, the molding fluid then does not have to be sucked out of the completely formed plastic container and replaced by the product.
  • the media distributor 19 can be seen, over which all treatment stations 5 of the mold filling machine 1 are supplied with the molding fluid, the product and a negative pressure.
  • the Figures 2 and 3 show the treatment station 5 in a side view with a first embodiment of the measuring device 24, in which by means of a position detection device 25, the longitudinal position of the stretch rod 13 along the direction 13a is detected. Furthermore, the stretching rod 13 has the return gas pipe 13c, via which gas can escape from the plastic container 2 into the channel 13d of the stretching rod during filling of the product 22.
  • the product 22 is introduced via the feed line 15 and the filling member 21 into the plastic container 2.
  • the gas in the container 2 is displaced and escapes via the return gas pipe 13c and the channel 13d. If the liquid level 22a now acts on the return gas pipe 13c, the remaining head volume of the gas can no longer escape and the desired amount of product is thus obtained.
  • the filled product quantity can be determined particularly easily via a measuring device 24 for the longitudinal position of the stretch rod 13.
  • FIG. 4 a further embodiment of the measuring device 24 is shown in a side view. This is different from the one in the Figures 2 and 3 illustrated embodiment only in that the liquid level 22a is not detected via the return gas tube but by a probe 13e on the stretch rod 13. Otherwise, the stretch rod 13, as described above, be adjusted in height with the traversing unit 26 and the longitudinal position with the position detecting device 25 are determined.
  • the probe 13e is embodied here as a conductivity probe and comprises two electrodes separated by an insulating gap and arranged one above the other.
  • the probe 13e is connected via the cable 13f with a suitable evaluation electronics and the machine control (both not shown here). If the probe 13e is located in the gas above the liquid level 22a, the measured conductivity is extremely low. On the other hand, if the liquid level 22a exceeds the insulating gap, both electrodes come into contact with the product 22. The conductivity now increases at the moment of contact with the product and the height of the liquid level 22a can be determined.
  • the in the Fig. 4 illustrated measuring device can either according to the preceding embodiment ( Fig. 2 and 3 ), wherein the position of the probe 13e before filling is set to be at the desired target level of the liquid level 22a of the finished product 22.
  • the stretch rod 13 is moved with the traversing unit 26 during filling continuously or in steps up and again and again the liquid level 22a via the position detection means 25 and the probe 13e is determined.
  • the filling member 21 can be regulated more precisely.
  • the measuring device 24 according to the invention can be seen in a side view.
  • the treatment station 5 differs from the embodiment in the Fig. 2 in that the measuring device 24 does not detect the stretching rod position but is formed with weighing cells 27 which detect the weight of the hollow mold 6, the plastic container 2 and the product 22 contained therein.
  • the load cells 27 and additional springs 28 are integrated into the bottom part 6 c of the mold and can thus detect a force on the arrangement in the direction F.
  • the load cells 27 are designed here as known per se Piezokraftaufsacrificing. These detect a force on the piezoelectric crystal and give a proportional amount of charge to the charge amplifier 30 via the lines 29.
  • the charge amplifier 30 converts the amount of charge into a corresponding force signal and outputs this via the bus system 31 to the machine control.
  • the change to the initial weight is continuously recorded and also forwarded to the machine control.
  • the filled amount of the product 22 corresponds to a predetermined weight change of the overall arrangement. If this is exceeded, the filling element 21 can be stopped and the container is filled with the desired filling quantity.
  • FIG. 6 a further embodiment of the measuring device 24 is shown in a side view.
  • the treatment station 5 differs from the embodiment in the Fig. 2 in that the measuring device 24 does not detect the stretching rod position but is designed as a product flow meter 32 in the valve head 11.
  • FIG. 7 a further embodiment of the measuring device 24 is shown in a side view.
  • the treatment station 5 differs from the embodiment in the Fig. 2 in that the measuring device 24 does not detect the stretching rod position but is embodied as a pre-suction-quantity detecting device 34 in the metering chamber 33c.
  • the metering unit 33 with the metering chamber 33c is arranged on the valve head 11.
  • the volume of the metering chamber 33c is limited by the metering cylinder 33a and the metering piston 33b.
  • the track unit 35 is a direct drive or a cam control.
  • the position of the metering piston 33b relative to the metering cylinder 33a can be determined with the detection device 34, which is designed as a linear encoder on the piston rod 33d. This can be determined either continuously or at the end positions of the dosing piston position exactly.
  • the pre-erosion amount can be determined from the end positions during the process of the metering piston 33b by multiplying the height difference of the end positions by the cross-sectional area of the metering cylinder 33a.

Claims (11)

  1. Machine de formage et de remplissage (1) pour assurer le moulage par formage d'un contenant (2) en matière plastique, à partir d'une préforme (3) dans un moule creux (6), et pour assurer le remplissage en produit du contenant (2) en matière plastique, dans le moule creux (6),
    comprenant une tête de vanne (11), qui comprend une tige d'étirage (13) pour étirer la préforme, et un organe de remplissage (21) pour assurer le remplissage du contenant (2) en matière plastique avec un produit (22), dans le moule creux (6), et
    comprenant un dispositif de mesure (24) pour déterminer la quantité de produit ayant été introduite dans le contenant (2) en matière plastique lors du remplissage,
    caractérisée en ce que le dispositif de mesure (24) comprend une cellule de pesée (27).
  2. Machine de formage et de remplissage (1) selon la revendication 1, dans laquelle le dispositif de mesure (24) comprend un dispositif de relevé de position (25) pour déterminer la position longitudinale de la tige d'étirage par rapport au contenant (2) en matière plastique.
  3. Machine de formage et de remplissage (1) selon la revendication 1 ou la revendication 2, dans laquelle la tige d'étirage (13) est réalisée avec un tube d'échappement de gaz de refoulement (13c).
  4. Machine de formage et de remplissage (1) selon l'une des revendications précédentes, dans laquelle le dispositif de mesure (24) comprend une sonde (13e) formée sur la tige d'étirage (13) et destinée à relever la hauteur du niveau de remplissage dans le contenant (2) en matière plastique.
  5. Machine de formage et de remplissage (1) selon la revendication 4, dans laquelle la sonde se présente sous la forme d'une sonde de conductivité.
  6. Machine de formage et de remplissage (1) selon l'une des revendications précédentes, dans laquelle la cellule de pesée (27) est conçue pour déterminer le poids du moule creux (6), du contenant (2) en matière plastique, qui y est logé, et/ou du produit (22) ayant été introduit lors du remplissage.
  7. Machine de formage et de remplissage (1) selon l'une des revendications précédentes, dans laquelle la cellule de pesée (27) est réalisée sous forme de jauge de contrainte ou de capteur piézoélectrique.
  8. Machine de formage et de remplissage (1) selon l'une des revendications précédentes, dans laquelle le dispositif de mesure (24) comprend un dispositif de mesure de débit de produit (32) dans la tête de vanne (11) ou dans une alimentation en produit de la tête de vanne.
  9. Machine de formage et de remplissage (1) selon l'une des revendications précédentes, dans laquelle le dispositif de mesure (24) comprend un dispositif destiné à relever une quantité de pré-dosage (34) dans une chambre de dosage (33c).
  10. Machine de formage et de remplissage (1) selon la revendication 9, dans laquelle le dispositif de relevé (34) comprend une cellule de pesée, un dispositif de mesure de débit de produit et/ou un capteur pour relever la position d'un piston de dosage.
  11. Machine de formage et de remplissage (1) selon la revendication 9 ou la revendication 10, dans laquelle la chambre de dosage (33c) est formée sur la tête de vanne (11).
EP14181652.0A 2014-08-20 2014-08-20 Remplisseuse de moule pour un récipient en plastique Active EP2987731B1 (fr)

Priority Applications (1)

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EP14181652.0A EP2987731B1 (fr) 2014-08-20 2014-08-20 Remplisseuse de moule pour un récipient en plastique

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Application Number Priority Date Filing Date Title
EP14181652.0A EP2987731B1 (fr) 2014-08-20 2014-08-20 Remplisseuse de moule pour un récipient en plastique

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EP2987731B1 true EP2987731B1 (fr) 2017-06-28

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108488622A (zh) * 2018-05-17 2018-09-04 杭华油墨股份有限公司 两级气缸灌装称重装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464085A (en) * 1966-09-26 1969-09-02 Dow Chemical Co Packaging apparatus
DE4102633A1 (de) * 1990-05-05 1991-11-07 Seitz Enzinger Noll Masch Fuellelement
DE60326353D1 (de) 2003-11-06 2009-04-09 Nestle Waters Man & Technology Herstellungsverfahren von Behältern aus Polyesterharz
US7981356B2 (en) 2005-03-15 2011-07-19 Invoplas Pty Ltd Stretch blow moulding method and apparatus
DE102010042165A1 (de) * 2010-10-07 2012-04-12 Krones Aktiengesellschaft Verfahren zum Behandeln wenigstens eines Behälters in einer Behälterbehandlungsanlage
CN103635389B (zh) * 2011-01-31 2016-04-13 Khs有限责任公司 用于制造利用液态填充物填充的容器的方法和装置
WO2013020885A1 (fr) * 2011-08-08 2013-02-14 Nestec S.A. Système rotatif pour souffler et remplir simultanément des récipients en matière plastique
US9802375B2 (en) * 2011-10-27 2017-10-31 Discma Ag Counter stretch connecting rod and positive fill level control rod

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